EP 1677590 A4 20100616 - AQUARIUM HAVING IMPROVED FILTRATION SYSTEM
Title (en)
AQUARIUM HAVING IMPROVED FILTRATION SYSTEM
Title (de)
AQUARIUM MIT VERBESSERTEM FILTRATIONSSYSTEM
Title (fr)
AQUARIUM A SYSTEME DE FILTRATION AMELIORE
Publication
Application
Priority
- US 2004033441 W 20041008
- US 51069803 P 20031009
- US 56122904 P 20040409
- US 96021304 A 20041007
Abstract (en)
[origin: US2005076851A1] An aquarium which includes a tank having a pump and an under gravel filter disposed in the tank below the pump. The under gravel filter includes a hollow bubble dispersing base plate having a perforated top surface and an overlying substrate. An air conduit is provided for introducing air into the pump. The pump is connected to the plate such as to pump blended oxygenated water and air into the interior of the plate to thereby cause oxygenated water and bubbles to exit upwardly through the perforated top surface of the plate and into and through the substrate. The pump includes a free floating magnetic impeller. A rotational torque generating unit is provided to rotate the impeller. The rotational torque generating unit includes a magnetic drive disk and a motor for rotating the magnetic drive disk. The pump and rotational torque generating unit are aligned with each other such that a magnetic field is established between the magnetic drive disk and the magnetic impeller, the magnetic field rotating upon rotation of the magnetic drive disk to thereby rotate the impeller.
IPC 8 full level
A01K 61/00 (2006.01); A01K 63/04 (2006.01)
CPC (source: EP US)
A01K 63/042 (2013.01 - EP US); A01K 63/045 (2013.01 - EP US); A01K 63/047 (2013.01 - EP US)
Citation (search report)
- [A] US 3929101 A 19751230 - KATZ LOUIS N
- [XYI] JP H0750953 A 19950228 - TERAMURA HIDEO, et al
- [Y] WO 8804524 A1 19880630 - ICHTHYOTECH LTD [US]
- [A] US 5062951 A 19911105 - TOMINAGA KAZUTOSHI [JP]
- See references of WO 2005034614A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2005076851 A1 20050414; US 7249571 B2 20070731; CA 2541642 A1 20050421; EP 1677590 A2 20060712; EP 1677590 A4 20100616; WO 2005034614 A2 20050421; WO 2005034614 A3 20090528
DOCDB simple family (application)
US 96021304 A 20041007; CA 2541642 A 20041008; EP 04794713 A 20041008; US 2004033441 W 20041008